/**
 * Copyright (c) Huawei Technologies Co., Ltd. 2023-2023. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __AICPU_HCCL_ALLGATHER_H__
#define __AICPU_HCCL_ALLGATHER_H__

#include "aicpu_hccl_algorithm.h"

class AicpuHcclAllgather : public AicpuHcclAlgorithm {
public:
    explicit AicpuHcclAllgather(AicpuComContext *ctx) : AicpuHcclAlgorithm(ctx) {}
    ~AicpuHcclAllgather() override = default;

    HcclResult RunAlgorithm(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
                            HcclDataType dataType, u64 strideLen = 0, AivAicpuOpParam *nextTask = nullptr) override;
private:
    HcclResult RunAllGatherv(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
                             HcclDataType dataType, u64 strideCnt);
    HcclResult RunAllGathervMC(HcclReduceOp opType, void *sendBuffer, void *recvBuffer, u64 dataCount,
                               HcclDataType dataType, u64 strideCnt, AivAicpuOpParam *nextTask);

    HcclResult GenRingTask(HcclReduceOp opType, u64 sndAddr, u64 rcvAddr, u64 gatherSize, HcclDataType dataType,
        uint32_t streamId, bool isClockwise, uint32_t step, bool isWindowLast) const;
    HcclResult RunDoubleRingAllGather(HcclReduceOp opType, u64 sendBuffer,
        u64 recvBuffer, u64 dataCount, HcclDataType dataType) const;

    u64 GetWindowOffset(u32 curTurnCnt, u64 curSize, u64 strideCnt, u64 recvBuffer);

    static bool isMCFirstCall;
};

#endif